Not really. I still live with my parents to this day - all it means is that I become an adult in the legal sense of the word and any contracts I sign are binding and nonvoidable.
The law in WA (http://apps.leg.wa.gov/rcw/default.aspx?cite=13.64&full=...) reads "the petitioner [must indicate] that he or she has the ability to manage his or her financial affairs".